关键词: 固体推进剂火箭发动机;侵蚀燃烧;燃烧效应;曲线求律法

Abstract: It’s usually difficult to determine the accuracy erosive function by testThis paper presents a new method combining the experimental pressure and digital technology to form the erosive function,which the theoretical results fit very wellThe digital method includes the pressure pointwise correcting and the least square fittingThe new erosive function which fits the intra class propellants after the size effect and combustion rate effect are consideredConsequently this new method may play an important role in test study and data processing of SRM

Key words: Solid propellant rocket engine;Erosive burning;Incendiary effect;Curve fitting